# bits.Sub() Function in Golang with Examples

The bits.Sub() Function in Golang is used to find the difference of a, b and borrow, i.e. diff = a – b – borrow. Here the borrow must be 0 or 1; otherwise, the behavior is undefined. To access this function, one needs to imports the math/bits package in the program. The return value of the borrowOutput will be always 0 or 1 in any case.

Syntax:

```func Sub(a, b, borrow uint) (diff, borrowOut uint)
```

Parameters: This function takes three parameters of uint type, i.e., a, b, and borrow. The value of borrow parameter is either 1 or 0

Return Value: This function return two values of uint type, i.e., diff and borrowOut. Here diff contains the result of a – b – borrow and borrowOut is either 1 or 0.

Example 1:

 `// Golang program to illustrate bits.Sub() Function  ` `package main  ` `   `  `import (  ` `    ``"fmt"` `    ``"math/bits"` `)  ` `   `  `// Main function  ` `func main() {  ` `   `  `    ``// Finding diff and borrowOu  ` `    ``// of the specified numbers  ` `    ``// Using Sub() function  ` `    ``nvalue_1, borrowOut := bits.Sub(4, 3, 0)  ` `    ``fmt.Println(``"Diff:"``, nvalue_1)  ` `    ``fmt.Println(``"BorrowOut :"``, borrowOut )  ` `   `  `}  `

Output:

```Diff: 1
BorrowOut : 0
```

Example 2:

 `// Golang program to illustrate bits.Sub() Function ` `package main ` ` `  `import ( ` `    ``"fmt"` `    ``"math/bits"` `) ` ` `  `// Main function ` `func main() { ` ` `  `    ``// Finding diff and borrowOut ` `    ``// of the specified numbers ` `    ``// Using Sub() function ` ` `  `    ``var a, b, borrow uint = 10, 5, 1 ` `    ``Diff, borrowOut := bits.Sub(a, b, borrow) ` `    ``fmt.Println(``"Number 1:"``, a) ` `    ``fmt.Println(``"Number 2:"``, b) ` `    ``fmt.Println(``"Borrow :"``, borrow) ` `    ``fmt.Println(``"Diff:"``, Diff) ` `    ``fmt.Println(``"BorrowOut :"``, borrowOut) ` ` `  `} `

Output:

```Number 1: 10
Number 2: 5
Borrow : 1
Diff: 4
BorrowOut : 0
```

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